Why should I choose an iD Mobile SIM deal?

iD Mobile SIM only plans are great value, offering plenty of data for a low monthly price – perfect for scrolling, streaming and staying in touch.

You’ll also get some handy extras:

Data rollover – unused data rolls into the next month
Spending caps – set a limit of up to £25 to stay in control
Inclusive roaming – use your plan in 50+ destinations at no extra cost
Reliable coverage – 99.8% UK population coverage via Three’s network

It’s flexible, affordable, and packed with perks.

How to pick the best iD Mobile deal for me

Think about how you use your phone day to day. Love streaming or sending large files? Go big on data – 100GB and unlimited plans are both reasonably priced.

Mostly stick to Wi-Fi or only do light browsing? A smaller plan could be all you need. Prices start at just £6 a month for 4GB.

Whichever you pick, all iD Mobile SIM plans come with:

Unlimited calls and texts
Free roaming in 50+ countries, including the EU

Take a look at our cheapest iD Mobile deals with at least 5GB of data. Or use our filters to find more deals.

Coverage area

iD Mobile runs on Three’s network, with 4G coverage reaching over 99% of the UK, on par with big names like Vodafone, EE, and O2. It also offers growing 5G coverage in 487+ UK locations.

Customer service

iD Mobile’s support is online-only, no phone lines. You can chat to an advisor or use the chatbot 7 days a week (9am–8pm weekdays, 9am–9pm weekends & bank holidays).

Need help anytime? The Help & Support hub is always open, and the iD community forum (with 50,000+ members) is great for peer advice.

Benefits

iD Mobile may not offer perks like O2 Priority, but it has handy extras:

Data rollover – Unused data rolls into next month automatically.
Roaming – Use your plan in 50+ destinations at no extra cost.
Free 5G – If your phone’s compatible, you’ll get superfast 5G where available, no need to pay extra.

Mobile app

The free iD Mobile app puts account control at your fingertips. Use it to:

Activate your SIM
Update your personal details
Transfer your number
Monitor your mobile phone usage
Download and view your bills
Check how much of your data allowance you’ve used
Upgrade, change or cancel plan
Report a lost or stolen SIM card
Set or amend a Bill Cap
Make a payment or set up Direct Debit
Get additional data or minutes as required
Check out the help and FAQs section

Available on the App Store and Google Play.

Roaming

All iD Mobile plans include EU roaming. You can use your UK minutes, texts and data in 50 destinations, including some outside Europe, at no extra charge.

Contract lengths

Pick a plan that suits you:

Flexible 30-day rolling deals
Standard 12-month plans
Longer 24-month contracts

Longer plans usually mean lower monthly costs, but less flexibility.

Upfront costs or set-up fees

There are no upfront costs or hidden setup fees with iD Mobile SIM-only deals. Just choose a monthly plan that suits your budget.

Data rollover

iD Mobile automatically rolls any unused data into the next month. If you regularly have data left over, consider switching to a cheaper plan with a lower allowance.

Tariffs

iD Mobile plans start from just £6/month.

Choose from:

30-day rolling contracts
12- or 24-month deals for longer-term savings

All plans come with unlimited calls and texts, and you can change your data allowance with 30 days’ notice. Data ranges from 4GB up to unlimited.

Wi-Fi calling

WiFi Calling comes with every iD Mobile plan. It lets you call and text over WiFi when mobile signal is weak, ideal for indoors or rural areas. Usage counts toward your monthly minutes/texts.

Tethering policy

Tethering is allowed on all iD Mobile SIM plans.

With unlimited data, hotspot freely
With a data cap, keep an eye on usage. Streaming on laptops can eat through your allowance fast

iD Mobile phone deals

Need a new mobile phone deal? If so, iD Mobile can help with that too. Here’s a selection of the phones that are available on this network’s pay monthly plans:

Other networks

If iD Mobile’s SIM only deals aren’t quite what you’re looking for, there’s plenty more to choose from with another UK network, such as:

FAQs

Will I need to sign a contract?

Only if you go for a pay-monthly or long-term SIM deal. Prefer flexibility? A 30-day rolling plan keeps things simple.

Can I get an iD Mobile SIM-only deal with poor credit?

It depends. Pay-monthly and long-term SIM deals need a credit check. But pay-as-you-go and 30-day SIMs usually don’t.

If I get an iD Mobile SIM-only deal, can I keep my current mobile number?

Absolutely. Just text PAC to 65075, give the code to iD Mobile, and they’ll handle the switch for you.